Solar flares on December 31, 2013
The most powerful solar flare in 24 hours
M6.4 (strong) flare - December 31 at 9:58 PM
Solar activity index
Value as of the end of the day on December 31, 2013
Solar X-ray emission over the past 2 days
Chart of solar X-ray emission (1-8 Å) from December 30, 2013 to December 31, 2013
Time zone — UTC+00 (London)
List of solar flares for December 31, 2013
The total number of solar flares of class C and higher — 9 flares
C class — 8 | M class — 1 | X class — 0
| Class | begin | max | end | region |
|---|---|---|---|---|
| M6.4 | 21:45 | 21:58 | 22:20 | 1936 |
| C2.9 | 19:49 | 19:53 | 19:56 | 1940 |
| C4.0 | 18:53 | 18:59 | 19:03 | 1940 |
| C1.8 | 18:20 | 18:25 | 18:31 | 1936 |
| C2.0 | 16:42 | 16:49 | 16:55 | 1938 |
| C8.8 | 10:23 | 11:50 | 12:32 | — |
| C2.2 | 07:33 | 07:40 | 07:47 | 1936 |
| C2.0 | 05:21 | 05:32 | 05:38 | 1938 |
| C5.6 | 02:29 | 02:40 | 02:46 | 1936 |